Improvement in stove-pipe thimbles



UNITED STATES PATENT OFFICE.

IMPROVEMENT IN STOVE-PIPE THIMBLES.

Specification forming part ofLetters Patent No. 41,592, dated February 16, 1864.

T0 @ZZ whom it may con/cern:

Be it known that I, THoMAs K. ANDERSON, of Hornellsville, in the county of Steuben and State of New York, have invented new and useful improvements in stove-pipe luesA or safety flange or bush to protect wood partitions 4from heat and taking lire from stovepipes; and I do hereby declare that the following is a full, clear, and exact description of the same, reference being had to the accompanying drawings, making part of this specitication, in which- A Figure l represents thc front face view. Fig. 2 is the rear side view. Fig. 3 shows a section across the flue or bush with a piece of stove-pipe in. Fig. t is the half of thel flue or bush in section. Fig. 5 represents au edge view with a piece of stove-pipe in place.

The object of my invention is to supply a simple, cheap, and perfectly safe stove-pipe bush or lue to support a stove-pipe when it passes through a partition or up through the ceiling and floor; and it consists in the construction of the indented tin or zinc cylinder and the mode of fastening the two cylinders to the flanges so as to make the stove-pipe ilue a substantial article.

I make rings or flanges A A and B B, of castfwmetal, with a rib, a a and b b, cast on one side, near the outer edge, for the purpose of forming a support inside for both edges of the outside rim, G C, which may be made of sheet tin, zinc, or other bright sheet metal. The inner rim, D D, may be nlade of the same material, and is secured to the flanges A A and B B by being of such a width over the outer rim, O O, as to allow the edges to be turned down onto the inner edges of the flanges A A and B B, as seen at e e e e, by which means the two anges are secured in their places, and the whole, article which constitutes the flue or bush is fastened securely together. The flanges A A and B B have a series of small openings, d d d d, through which a current of air will `constantly be passing, thereby expelling the heated or rareed air, and keeping the iianges A A and B B and the cuter rim, C C, cool, or at such a low degree of temperature that no wood or anything coming in contact with it can ignite. The inner rim, D, has indentations made with a spherical-pointed punch from the inside, which form a series of convex protuberances, t' i i z z' t', against which the stove-pipe E E impinges, it having but a comparatively small bearing against the flue, while it is held firmly in the center.

The flanges, being made of cast metal, may

be of any size desired, and the inner and outer 4 rim, being made of tinplate or sheet-zinc, can be of a Width just to come flush with the face of the wall on both sides of the partition, or

the floor and ceiling when the'stove-pipe is placed in a vertical position, the saine being held centrally in the flue by the bulbous projections in the inner rim.

Having thus fully described my invention, what I claim as new, and desire to 'secure by Letters Patent, is-

The tin or zinc cylinder D, having a bright surface, and indented throughout its surface with protuberances, in the manner as and for the purposes herein described.

THOMAS K. ANDERSON.

Vitnesses:

Hoi/[ER HALLIDAY, NATH. CHADwIoK. 

